Product Description   White corundum grains raw corundum price White corundum grains raw corundum price was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling.White corundum grains raw corundum price is white with the main crystal phase alpha-Al2O3.The White corundum grains sand blasting grit produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved. Chemical analysis: Al2O3(min) 99.2 SiO2(max) 0.2 Fe2O3(max) 0.2 Na2O(max) 0.3 Physical characteristics: color white Mohs Hardness 9.0 Melting point 2250℃ Maximum service temperature 1900℃ Bulk density 1.75-1.95g/cm3 Real density 3.95g/cm3